How does the volume change in tea when sugar is added?

In our daily lives, adding sugar to coffee or tea does not change the volume, at least not perceptibly. The sugar molecules can go to fill the space between water molecules and the suspension remains colorless. If I continue adding sugar until I see white substance at the bottom of the glass/cup, there is no more space for sugar molecules to go and the apparent volume of tea/coffee starts expanding -- the volume of the saturated sugary tea has not changed -- it is the water level rising due to the white sugar at the bottom.